Grindelwald-Marmor
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- Rango
- unità litostratigrafia
- Uso
- Unità in uso.
- Status
- termine locale (informale)
Nomenclatura
- Deutsch
- Grindelwald-Marmor
- Français
- Marbre de Grindelwald
- Italiano
- Marmo di Grindelwald
- English
- Grindelwald Marble
- Origine del nome
- Varianti storiche
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Grindelwaldner Marmor (Arbenz 1909, Heim 1919, Arbenz & Müller 1920, Wieland 1976), Breccienmarmor am Unteren Grindelwaldgletscher (Seeber 1911), Grindelwaldnermarmor (de Quervain 1969), Marbre du Grindelwald (Rutsch & Stalder 1970)
Descrizione
- Descrizione
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Mitteleozäne Brekzienvarietät der marmorisierten Siderolithbildungen mit einer grünen, roten oder violetten Grundmasse. Die Komponenten stammen aus der Quinten-Formation, der Öhrli-Formation und aus den Tschingelkalken (Helvetischer Kieselkalk) und treten in einer sandig-tonigen Matrix auf.
Età
- Geomorfologia
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- Eocene medio
- Età alla base
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- Eocene medio
Geografia
- Estensione geografica
- Unteres Tal des Grindelwald-Gletschers.
Paleogeografia e tettonica
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- Siderolitico
- Paleogeografia
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North Tethyan Shelf (Helv.)
:
marge continentale européenne - Termini generici
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Zentrales Helvetikum
:
u.a. Berner Oberland
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Zentrales Helvetikum
:
- Tipo di origine
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- sedimentaria
- Metamorfismo
- non metamorfo
Referenze
- Revisione
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(2016) :
Lithostratigraphic units of the Helvetic Palaeogene: review, new definition, new classification. Swiss J. Geosc. 109/2, 171-199
p.177: The Grindelwald ‘‘Marble’’ (‘‘Grindelwaldner Marmor’’, Arbenz 1909, Wieland 1976) outcrops in the valley of the lower Grindelwald glacier and is known for its use as building stone for door casings, columns and furniture tops. It is lens-like embedded in the limestone of the Öhrli Formation as colourful breccia. Components of Helvetischer Kieselkalk,Öhrli- and Quinten formations are enclosed by a sandy, dark-green or argillaceous, dark-red to violet matrix.
The Grindelwald ‘‘Marble’’ is considered as a breccia-variety of the Siderolithic Group; the less well known Rosenlaui ‘‘Marble’’ equally corresponds to a breccia-variety of the Siderolithic Group.